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bii17
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A train travels between two stations 1/2 mile apart in a minimum time of 41 sec. If the train accelerates and decelerates at 8 ft/sec^2, starting from the first station and coming to a stop at the second station, what is its maximum speed in mph? How long does it travel at this top speed?
 11 months ago
 11 months ago
bii17 Group Title
A train travels between two stations 1/2 mile apart in a minimum time of 41 sec. If the train accelerates and decelerates at 8 ft/sec^2, starting from the first station and coming to a stop at the second station, what is its maximum speed in mph? How long does it travel at this top speed?
 11 months ago
 11 months ago

This Question is Closed

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Let's say that the train takes \(t_0\) time to reach the max. speed \(v_o\). Use the equation \(v_f = v_i + at\). Then you have,\[v_0 = 8t_0\]\[0 = v_0  8(41  t_0)\]
 11 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Two equations... two variables. Solve.
 11 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
That is, if I understood your question correctly. The train starts, accelerates at 8 ft/sec^2, reaches the top speed, and decelerates at 8 ft/sec^2?
 11 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
If that is so, then the other info is useless.
 11 months ago

bii17 Group TitleBest ResponseYou've already chosen the best response.0
the final answer should be 60mph. but i did't get the same answer ung your two equations
 11 months ago
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